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    准噶尔盆地流体输导格架及其对油气成藏与分布的控制

    邹华耀 郝芳 张柏桥 陈建平

    邹华耀, 郝芳, 张柏桥, 陈建平, 2005. 准噶尔盆地流体输导格架及其对油气成藏与分布的控制. 地球科学, 30(5): 609-616.
    引用本文: 邹华耀, 郝芳, 张柏桥, 陈建平, 2005. 准噶尔盆地流体输导格架及其对油气成藏与分布的控制. 地球科学, 30(5): 609-616.
    ZOU Hua-yao, HAO Fang, ZHANG Bo-qiao, CHEN Jian-ping, 2005. Fluid-Conduit Framework and Its Control on Petroleum Accumulation in the Junggar Basin. Earth Science, 30(5): 609-616.
    Citation: ZOU Hua-yao, HAO Fang, ZHANG Bo-qiao, CHEN Jian-ping, 2005. Fluid-Conduit Framework and Its Control on Petroleum Accumulation in the Junggar Basin. Earth Science, 30(5): 609-616.

    准噶尔盆地流体输导格架及其对油气成藏与分布的控制

    基金项目: 

    教育部科学技术研究重大项目 10419

    中国石油天然气集团公司石油科技中青年创新基金项目 04E7020

    详细信息
      作者简介:

      邹华耀(1963—), 男, 博士, 副教授, 主要从事油气成藏机理研究. E-mail: huayaozou@cup.edu.cn

    • 中图分类号: P618.13

    Fluid-Conduit Framework and Its Control on Petroleum Accumulation in the Junggar Basin

    • 摘要: 准噶尔盆地是一个大型叠合盆地, 不同构造单元具有不同的演化历史、流体动力学环境、流体输导格架和油气充注历史.盆地西北缘处于正常压力环境, 发育自源岩至圈闭的断裂-不整合面贯通型流体输导格架, 主要油气聚集期为三叠纪-侏罗纪.由于高效流体输导网络的发育, 西北缘油气聚集期与主力源岩生排烃期一致, 是该盆地油气最为富集的区域.盆地中部断裂密度低, 深、浅部断层被三叠系白碱滩组区域封闭层分隔, 在超压发育前和超压积蓄期为双断分隔型流体输导格架, 超压的发育导致地层发生水力破裂和封闭性断层的开启, 从而形成断裂-水力破裂连通型流体输导格架, 构成流体和二叠系源岩生成油气的穿层运移通道.由于地层水力破裂及其控制的断裂-水力破裂连通型流体输导格架的形成晚于主力源岩的主生油期, 盆地中部油气的主要聚集期晚于主力源岩的主生油期, 且原油的成熟度较高.研究证明, 输导格架控制区域性流体动力学环境、油气优势运移通道、油气的充注层位和充注历史.

       

    • 图  1  准噶尔盆地印支期(a)和燕山期(b) 断裂分布

      Fig.  1.  Distribution of Indosinian faults (a) and Yanshanian faults (b) in the Junggar basin

      图  2  西北缘、中部地层压力与深度关系(部分资料据王震亮等(2002)范光华(1994))

      Fig.  2.  Formation pressure with depth in the northwest and middle of Junggar basin

      图  3  准噶尔盆地腹部超压顶面形态

      Fig.  3.  Variation of the depth to the top of overpressure in central Junggar basin

      图  4  准噶尔盆地腹部超压顶界面附近储层孔隙度与渗透率的变化

      Fig.  4.  Variation of porosity and permeability for reservoir sandstones near the top of overpressure in central Junggar basin

      图  5  准噶尔盆地西北缘断裂-不整合连通型输导格架(位置见图 1剖面Ⅰ)

      Fig.  5.  Connected conduit framework by faults and unconformities in northwest margin of Junggar basin

      图  6  中部断裂-水力破裂缝配置型输导格架(位置见图 1剖面Ⅱ)

      Fig.  6.  Combined conduit framework by faults with hydrofractures in the centre of Junggar basin

      图  7  西北缘与中部源岩生烃史、流体输导格架演化与油气充注历史之间的关系

      Fig.  7.  Relationships among hydrocarbon generation, conduit framework evolution and hydrocarbon charging in the northwest margin and centre of Junggar basin

      图  8  盆地中部烃类包裹体均一温度直方图与充注时间的确定

      Fig.  8.  Homogenization temperature histograms of oil inclusions and dating of oil-charging in the middle of Junggar basin

      表  1  西北缘与盆地中部原油物性与成熟度参数

      Table  1.   Density and maturity parameters of oil in the northwest margin and centre of Junggar basin

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    • 收稿日期:  2005-05-03
    • 刊出日期:  2005-09-25

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